Roller neck bearing for textile drafting machines



Sept- 16, 1952 E. B. ROBINSON x-:TAL 2,610,363

ROLLER NECK BEARING FOR TEXTILE DRAFTING MACHINES nl r/Ac/r C. CosTNEI?. 7' "w 33143 E. B. RoBlNscN Erm. 2,610,363

ROLLER NECK BEARING FOR TEXTILE DRAFTING MACHINES Sept. 16, 1952 '4 Sheets-Sheet 2 Filed Aug. 16, 1948 ELv/N B. Po//vsoN r/ACK C COST/VER.

' Sept. 16, 1952 E. B. ROBINSON Erm.

ROLLER NECK BEARING FOR TEXTILE DRAFTING MACHINES Filed Aug. 16, 1948 4 Sheets-Sheet 3 E. B. RoBlNsoN ETA.

i ROLLER NECK BEARING FOR TEXTILE DRAFTING MACHINES Sept. 16, 1952 4 Sheets-Sheet 4 /A CK C. COSTA/EE',

- Patented Sept. 16, 1952 UNITED STATES PATENT OFFICE ROLLER NECK BEARING FOR TEXTILE DRAFTING MACHINES Elvin B. Robinson, Gastonia, and Jack C. Costner, Bessemer City, N. C., assgnors,`by direct and mesne assignments, to Ideal Industries, Inc., Bessemer City, N. C., a corporation of North Carolina Application August '16, 1948, serial No. 44,414

ing cavities therein provided-"with semi-circular" bottom surfaces to 'conform to the Vdiameter of the Vshaft mounted therein, and thev opposite sides of each of the lbearing cavities being parallel so the ends ofthe roller necks may be placed in the bearin'gfwithout having to insertfthefends of the rollers in the bearng'from the sides, and bearings of this type, being friction bearings, not only become wornl and-collect a considerable amount of lint, dust land the like, but also arediicult to lubricate, andgt is also diflicult to maintain lubrication of these bearings after theends ofthe rollers have been mountedv therein.

4It is'l therefore an objectof this invention to prov-ide means for mounting the-bottom rollers of drawing frames Vin anti-friction bearings, the anti-frietionbearings being disposed in tubular bearing housings which are adapted to fit inthe present'bearing cavities of the existing bearing blocks yof thetype described, and thereby requiring that -no changes be made in the 'existing machine bearings, but providing larger diameters at the. end portions of the tubular housings to accommodate' the 'circular 'washers/and ralsoV preventing endwisermovem'ent of the tubular hous- It is another object of I' this invention tor provide anti-friction bearings` 'for supporting the bottom rolls of drawing frames andthe like, which bearings may be` mounted in the conventional bearing Yblocks ofthe :machine-,without modifying the machine, .said bearings having lubricating means associated. therewith with means for preventing 3 Claims. (Cl. 19-134) 2 anti-friction bearing housing' removed fromV the machine;

Figure 5 isa vertical sectional View througha long draft spinning frame, showing the drawing rolls and the' bearing associated therewith;

Figure`5-A vis an isometric View of one of the bearings forfthe top'rolls, removedfrom its bearing block;

Figure 6v is a top plan view taken-substantially along the line 6---6vr in Figure 5";`

Figure '7 is a vertical sectional view taken substantially along the line 14-1 in Figure 6`;`

Figure 8 is a vertical sectional view showing a portonof a'twister frame;

Figure 9=is-an.en1arged" vertical sectional view taken substantially alongthe line 9--9 infFigure 8 and showing" the improved anti-friction bearing mounting and omitting the top rollshown in dotted lines in Figure 8; I

' Figure 10` isa top plan-view taken substantially along the line llllilY in Figure 8;

Figure 11 'is'v a vertical'isectional view Ataken alongthe line Il--Ilinlig-ure-Q.V

Referring more specifically tov the drawings, the Figures l, 2 and 3 show the improved bearingv assembly as applied to-a roving frame and the numeral Ii)v broadly designates abearing standV havingv a lower horizontal portion Il, which is adapted to be secured to the main frame 250i the machine inany suitable manner, such as by screws 2 l.

' The bearing standl lillalso has vertical legs l2 and [Sand an upper horizontal leg portion I4,

which isrslotted, as at I5', from near one end to the other, or from the do-tted line-I6 in Figure 2 to the dotted lineV i1 in Figure 2. The bottom rolls-of the machine are' indicated at 25, while the top rolls are indicated at 35.' A plurality of slivers 3l'. are adapted to be passed between the top and bottom rolls 35 andr 25, respectively, and through a suitable eye 38, beingr drawn by conventional calenderrollers `39 and-4D. It may be observed in Figure 3 that the conventional iiuted bottom rollers 25have had the conventional roller neckA portions removedfrom the sameand the bottom rollers`are connected together by av shaft or roller neck 45 lwhich is secured-inthe proximate ends of the iluted portion ofthe .bote tom rollers, as by a pressed lit. The shaft 45 is a part of the improved Vanti-friction bearing unit comprisinga tubular bearing housing broadly designated at 46.' This tubular housing 46 has circular end portions 41 and'fiattened side portions 48 and-t9 extending longitudinally thereof but 'terminating 'a substantialdistance from each end of the same so as to provide a substantially greater wall thickness to the portion of the tubular bearing housing which is not disposed within the groove of the bearing block. It is to be noted that the Width of the bearing housing 46 is, from one flattened side to the other, the same as the diameter of the conventional roller neck portion and the diameter of the end portions 41 is usually equivalent to the pitch diameter of the flutes in the fluted rollers, the unilattened ends 4l serving as spacing bosses.

The upper surface of the horizontal portion I4 of the bearing stand l0 has a plurality of bearing blocks 55 secured theretoV by means of suitable screws 56. These bearing blocks 55 are conventional and each has a conventional bearing cavity or groove 5l therein in which the tubular bearing housing 46 is adapted to be placed, the flattened portions 48 and 49 being adapted to engage the proximate surfaces o-f the groove 51 in the bearing block 55.

The end portions 41 of the tubular bearing housing 46 are adapted to be disposed beyond the limits of the bearing block 55. The tubular bearing housing 46 is restricted as at 62 to provide shoulders against which suitable roller bearing housings 63 having rollers 64 are adapted to fit and these housings 63 are also secured in the tubular housing 46, as by a pressed iit (Figure 3). The remote or outer ends of the roller bearings 63 are engaged by firstv washers 65 which are pressed in the housing 46 and in Which the shaft has rotational movement, while the outer surfaces of the first washers 65 are engaged by second washers 06 which are pressed onto the shaft 45 and have `rotational movement in the housing 46. There are also third washers 68 which engage slidably the remote or outer surfaces of the second washers 66 and which are pressed into the lhousingl 46 and in which the shaft 45 rotates. Rotatably mounted in the ends of the tubularhousing -46 and being pressed on the shaft 45 are fourth washers 'l0 which slidably engage the remote or outer surfaces of the third washers 68.

A suitable grease fitting'lE is threadably imbedded in a threaded bore 14 in the housing 46 and communicates-with the cavity in the housing 46 to thus admit lubricant to the bearings 63 disposed at each side of the cavity. The purpose of the washers 65, 66, 68 and 'I0 disposed adjacent the-remote ends of the housing 46 is t0 confine the lubricant admitted through the fitting T5 to the area in which the roller bearings 63 are mounted.

The bearing housings for the top rollers 35 are very similar to the end portions of the tubular bearingv housing 46 for the bottom rolls 25 with the exception that the proximate ends of the top rollers 35 cannot be mounted in the same bearing member, inasmuch as lthe top rolls 35 must raise and lower accordingto the density of the slivers 3l passing between the rollers 25 and 35. Therefore, the proximate ends of the rolls 35 are shown as being mounted on shafts 80 which are secured therein, as by a pressed t, and these shafts 80 are part of anti-friction bearing units, the tubular lliousing of each of which is indicated broadly at 8 Each of these units 8| comprises an end portion 82 which is tubular and the other end is flattened as at 83 and 84 at opposite sides thereof, while the proximate ends of these bearing housings 8| are closed as at 85. Each housing 8| has a cavity 89 in its upper surface for receiving a ning frame.

pressure hook 88, to the lower end of which is applied a weight W. The housing 8l has a roller bearing housing 86 secured therein as by a pressed fit, and in which the proximate ends of the shafts are rotatably mounted. Each bearing housing has rollers 9| therein. Each of the tubular bearing housings 8| has a washer 81 pressed thereinto which engages the outer surface of the roller bearing 86 and in which the shaft 80 has rotational movement. Engaging the outer surface of the washer 81 is a similar washer 90 which is rotatably mounted within the bearing housing 8| and is pressed onto the shaft 80. Slidably engaging the outer surface of the Washer 90 is another washer 92 which is pressed into the housing 8| and in which the shaft 80 has rotational movement, and the outer end of the housing 8| has a washer 94 rotatably mounted therein which is pressed on and rotates with the shaft 80. The tubular bearing housings 8| each has a bore therein which communicates with the cavity in' which the roller bearing 86 is mounted to thus admit lubricant to the same, and the washers 81, 90, 92 and 94 provide a sealing means for preventing the lubricant from leaking from the area in which the roller bearing is mounted. By referring to Figures 5, 6 and 7 it may be observed how this anti-friction bearingunit comprising the tubular housing 46 may be used for mounting the bottom rolls inalong draft spin- A spinning frame ofl this'type has a bearing block support bar |00 on which conventional bearing Vblocks |0| are secured, as v-by screws |02.

These bearing blocks |0| have suitable bearing cavities therein in which are mountedv front, middle and back fluted or corrugated rolls 03. The bearing blocks are xedly penetrated by a rod'l08 on which are'mounted top roll supporting members ||0, there being one of these top roll'supporting members disposed adjacent each side of each of the bearing blocks |0|. y

The roll supporting members Il] rotatably support the ends of arbors of'a plurality of top rolls in a conventional manner. These top rolls have conventionalv leather coveredV bosses ||V2 which are adapted to contact the uted or corrugated bosses of the lower and back fluted rolls |03, the middle corrugated or fiuted rolls having a conventional apron H4 passing over the same which is engaged by the middle top roll'I I. The roll supporting members ||0 also support a conventional clearer board I6 having top roll clearers thereon, one of which is shown in Figure 5. In this instance, the portion of the bottom roll |03 that is normally disposed between the proximate ends of the fluted portion and adjacent the bearing stands i0| is 'cut away and the opposite ends of the shaft 45 of the antifriction bearing unit are xedly mounted in the proximate ends of the: iiuted rollers |03. The flattened surfaces 48 and 49 of the tubular bearing housing 46 are adapted to engage the opposed surfaces of the bearing cavities in which the rollers |03 have heretofore been mounted, and the circular portion 41 of the bearing housing 46, adjacent each end thereof, is disposed outside of the bearing stand |0|, and it is thus seen that this bearing unit is applicable to a spinning frame as well as to a roving frame, although it is obvious that some dimensional changes would have to be made in the antifriction bearing unit, but there would be no changes made in the structure of the unit.

Figures 8, 9, 10 and 11 show the anti-friction to -af twister frame- "The twister frame has-abearinglsupp'ort bar`|50on conventional vbearir'ig blocks I 5I are -s'ecured; as -by screws |52, thereibeing one of these bearing blocks -f| y shown in thesdrawings.-

The bearing bloclfz-jelzlphasf'a,bearing member |53 ymounted therein which is provided with a bearingcavity |52', inv which the conventional bottom rolls areV normally"mounted.v However, inithis instance; the'iiattenedrsurfaces AMifajnd 49 of 'the beari'ngyhousingA llrareadapte'd'to conform to the opposite sides of the cavity |52' in the bearing member |53 and it is thus seen that the anti-friction bearing unit is mounted in the bearing member |53 in a manner identical to that described for the roving frame and the 5; bearing-unit as applied spinning frame.

Inasmuch as the proximate ends of the bottom rolls |55 are very close to the remote surfaces of the bearing stand |5|, the proximate ends of each of the bottom rolls |55 has a cavity |56 therein in which the remote ends of the tubular bearing housing 45 are loosely mounted, and the shaft 45 of the anti-friction unit is fixedly mounted in the bottom rolls |55. Each of the bearing blocks |5| has a top roll bracket |58 associated therewith in which the ends of arbors of conventional top rolls |60 are mounted for rotation and these top rolls |60 are adapted to rest on the bottom rolls |55 in a conventional manner.

It is thus seen that the improved anti-friction 'bearing unit is also applicable to a twister frame in much the same manner as to the spinning an roving frames heretofore described. v

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specic terms are employed they are usedin a generic and descriptive sense only, and not., for purposes of limitation, the scope of the invention being dened in the claims,

We claim:

1. An improved mounting for rolls of a roving frame and the like, said roving frame having top and bottom rolls and also having spaced bearing blocks each of which is substantially U-shaped in cross-section forming a groove therein, said improved mounting being provided for rotatably Supporting the bottom rolls of the roving frame and comprising a tubular housing for each of the bearing blocks, the medial portion` of which is flattened on opposite sides to iit into the groove in each of the bearing blocks, opposed ends oi the tubular housing extending beyond the corresponding bearing block and being of substantially greater diameter than the width of the groove in the bearing block, the central portion of the tubular housing having a restricted bore form` ing shoulders at each end thereof, a pair of spaced roller bearing housings mounted in the tubular housing in axial alinement with each other and being pressed against said shoulders, said roller bearing housings being spaced inwardly from the opposed outer ends of the tubular housing, first washers lxedly mounted in the tubular housing and engaging the surfaces of said spaced roller bearing housings nearest opposed ends of the tubular housing, a shaft extending axially through and beyond each end of the tubular housing, said shaft being mounted foi` rotational movement in the roller bearing housings and the washers, second washers slidably and rotatably engaging the surfaces of the iirst washers nearest opposed ends of the tubular housing and being pressed onto the shaft and also being rotatably mounted ,6. in the: 'tubular housing,` third washers slidably and rotatably engaging the surfacesfof the-second'Washers'nearest-opposed ends of the tubular housing Vandbeing"iixe'dly mounted in the tubular housing and the shaft being rotatably mounted in the third washers, fourth washers slidably and rotatably engagingl the, surfaces of v the third washers nearest opposed ends of the tubular housing and being rotatably mountedin the housing andalso being xedly mounted on the shaft, a grease'tting penetrating` the wall of saidtubu- Vlar-*housing at a point between the spacedroller bearing housings and through which va lubricant may be introduced into the area in which the roller bearing housings are disposed and the arrangement of said washers providing a seal the cavity of each of the bearing blocks and engaging the side walls of the bearing cavities to prevent rotation of the tubular bearing housing,

a shaft connecting adjacent sections of the bottom rolls and each shaft being mounted in a separate one of the tubular bearing housings, each tubular bearing housing having a restricted bore intermediate its ends providing a shoulder at each end thereof and a pluralityof circularly arranged rollers on each side of the restricted bore and surrounding said shaft and in which the shaft may rotate, a pair of roller bearing housings encircling said rollers and being pressed against said shoulders the opposed outer ends of the tubular bearing housing having a pair of spaced washers secured therein and the shaft having awasher secured thereon and occupying the space between the first-named Washers.

3. In a textile machine in which rolls are employed for drafting textile fibers, said machine having axially alined sections of bottom and top rolls and also having spaced bearing blocks provided with bearing cavities, atleast one tubular bearing housing having flattened sides along its medial portion disposed in the cavity of each of the bearing blocks and engaging the side walls of the cavity to prevent rotational movement of the tubular bearing housing relative to its cavity, a shaft connecting adjacent sections of the bottom rolls and each shaft being mounted in a separate one of the tubular bearing housings, each tubular bearing housing having a restricted bore intermediate its ends forming al shoulder at each end thereof, a roller bearing housing oneach .side of the restricted bore and pressed against said shoulder, the outer ends of the tubular bearing housing extending beyond the bearing blocks being circular and having a pair of spaced washers secured therein and the shaft having a` Y Washer secured thereon and occupying the space 7 bearing housings disposed on opposed sides of the Number restricted bore. 1,742,553 ELVIN B. ROBINSON. 1,958,412 JACK C. COSTNER. 2,412,357 5 2,530,094 REFERENCES CITED The following references are of record in the v Number le of thls patent. A 455,518 UNITED STATES PATENTS 10 475,322 Number Name Date 678.180

1,696.938 Curtis Jan. 1, 1929 Name Date Motte Jan. 7, 1930 Andrada et al May 15, 1934 Robinson Dec. 10, 1946 Stearns Nov. 14,` 1950 FOREIGN PATENTS Country Date Great Britain Oct. 22, 1936 Germany Apr. 22, 1929 Germany July 10, 1939 

